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Titolo:
NANOTWINS IN BATIO3 NANOCRYSTALS
Autore:
HAMADA E; CHO WS; TAKAYANAGI K;
Indirizzi:
JEOL LTD,JAPAN SCI & TECHNOL CORP,ERATO,TAKAYANAGI PARTICLE SURFACE PROJECT,3-1-2 MUSASHINO AKISHIMA TOKYO 196 JAPAN
Titolo Testata:
Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties
fascicolo: 5, volume: 77, anno: 1998,
pagine: 1301 - 1308
SICI:
1364-2804(1998)77:5<1301:NIBN>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
BARIUM-TITANATE; CERAMICS; TWINS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
E. Hamada et al., "NANOTWINS IN BATIO3 NANOCRYSTALS", Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties, 77(5), 1998, pp. 1301-1308

Abstract

BaTiO3 nanocrystals, in which the coexistence of the high-temperaturehexagonal phase with the cubic-tetragonal phase at room temperature was suggested in a previous study, have been investigated using high-resolution transmission electron microscopy. The BaTiO3 nanocrystals were found to have the cubic-tetragonal structure with (111) planar defects. The observed images other than cubic-tetragonal BaTiO3 showed firstly coherent (111) twins often forming lamellae consisting of three tofive atomic layers, secondly periodic images of a 0.70 nm x 0.49 nm rectangle and thirdly incoherent (111) planar images. The rectangular lattice and the incoherent (111) planar images originated from the superimposition of the matrix and the (111) twin. The peaks that were ascribed to the hexagonal phase in the electron diffraction pattern were well explained as a result of the nano-sized twins in the cubic-tetragonal matrix.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 19:41:59